Packing



Sept. l1926.

`J. M. RHODES PACKING Filed June 1, 1920 2 Sheets-Sheet 1 SePt- 21 1926 .1. M. RHODES PACKING Filed June l 1920 2 sheets-sheet 2 lwherever found applicable.

Patented Sept. 21, 1926.

UNITED STATES PATENT oFFIcE'. K-

Y JOHN M. HHoDEs, or CHICAGO, ILLINOIS, AssIGNo'H ro CHICAGO METALLIC PACKING" C0., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PACKING.

Application filed June 1,

My invention belongs to that general class of devices known as packing, and relates more particularly tov a packing applicable that-is simple, convenient, durable, efficient,

reliable, inexpensive and satisfactory for use its further objects the production of a packing that is notY only extremely efficient in preventing the leakage of iiuids or the like, but which packing is extremely durable and of long life. vIt'also has as an object the production of a packing which will perform its functionl with a minimum of friction, whereby the efliciency of the `machine will not bey affected by its use. 'Many other objects and 'advantages lof, the construction herein shown and described will be obvious to those skilled in the art from the disclosure herein given.

VvTo this end my invention consists in the noveljconstruction, arrangement and coinbination of parts herein shown and described and more particularly pointed out in the claims. Y f Y Y In the drawings, wherein like reference 'characters indicate like or corresponding parts, f

' Fig. 1 is a view in elevation of a piece of my improved packing with a portion broken Fig. 2 isa sectional view taken substan- Fig. 3 is a sectional view taken substan tially on line 3 3 of Fig. 4: illustrating a slightly modified form of the packing;

Fig. 4g isa side elevation of another form 'with portions broken away of the same,

Fig. 5 is a sectional view of a modification of the same; Y

Fig. 6 is a sectional view illustrating the form shown in Fig. 3 with the metal turned side out.; l n Y .Figs 7, 8, 9, 10 and 11 are similar'secytional views which illustrate other modified constructions. t

Fig. 12 is a View in elevation showing a Strip of packing foldedk up with the ends It has among ,or the like.

1920. Serial No. 385,492. i

brught together to produce a packing ring;

Fig. 18 is a'viewin elevation' of a complete ringwithout 'any breaks. Y

Referring to the drawings, 1 represents a.

vmetallic body part which, in the preferred construction, is made up of aplurality of Y' pieces of a suitable metal ofthe desired size and shape, a suitable lubricantbeing prefer-v 'ably provided therewith. 'It may be mentioned that I preferably'use a comparatively soft metal such as lead or thelike, or some alloy, and I prefer to form the sameV into strips, ribbons or wire, and coat them with alubricant which will also serve as a liquid or fluid re'pellant. I have found graphite very 'satisfactoryfor the purpose. I also gener.- ally use graphite mixed vwith oil,'the oil serving asa binder for the graphite as well as a lubricant and i'ep'ellant.l By building up the body part 1 of a plurality of plies or y p strips, the same is more or less flexible and pliable. Referring particularly to Figs.' 1 and 2, the body 1 is formed with the face 2 arranged to bear against the part `to be packed, as for examplea piston or plunger Y rod, a rotating shaft or the like. The opposite side of the same may be formed asshown Vat 3, or in a preferred manner, which may depend upon the sizes and uses to which the Ypacking is` to be put. In making up the packing there is formed therewith a back,V

preferably of a yielding or elastic material which is substantially a packing. in itself,

that is" to say,"I prefer touse a materiall which will tendto stop the leakage of liuids I have found rubber very satisfactory for the purpose. The particular kind of rubber, however, that is to say the composition thereof, may v'ary depending upon the usey to which the packing is to be put, and in some cases it may be preferred l to use a fiber or fabric backing, for example in a use where the rubber wouldbe affected -bv the material which may leak. In Figs.

luand 2 I haveshown'the backing in a pluis formed to substantially conform to the shape of part 1, it beingunderstood, as previously mentioned, that the parts may vary in shape depending upon the preference'of ythe user, and the use to which the packing desired manner.

is to be put. In making up the same I preterably secure the metallic body 1 and the backing H together and form a unitary structure by means `ot a cover o r retainer 5 of suitable material applied thereto in any I h-ave illustrated a woven wire covering 5, and in this case where Wire is used, I prefer to use aV wire of comparatively soft metal, for example copper, which will not cut or scratch a moving part and does not affect the pliability of the pack ing. In some cases, however, the same may be covered with a linen, cotton or like fabric or covering of fibrous or` other material. One Ot the advantages of using 'a woven wire covering is thatl it does not absorb moisture and the lubricant, for example the graphite may vvork'throughY the fabric and lubricate the moving part. Eventually, however, vthe fabric over the vtace 2 may be worn awa' This does not ailect the use as it isprimarily intended for a temporary cover to retain the parts together during the shipping and applying. However, the portions extending over parts 4 tend to some extent to hold the several parts together when the packing is in a stuffing box.

The construction shown in Fig. 8 is substanti-ally similar to that described, except that the body part 6 is provided with a covering 8 entirely confining the'same, and then the part 6 and cover and the elastic backing v7 are enclosed in another covering 9. In

some cases the covering 9 might be omitted, and moulded rubber or like rings employed in connection with the metallic body part. Obviously the meeting faces of 6 and 7 may be as preferred'. Y

The style of packing shown in Fig..5 is substantially similar to those described, body v11 being providedwith the backing 12 of rubber'or the like, and the same enclosed with a covering 13, 141 being the bearing :tace of the packing. With the particular type shown here the elastic or yielding backing 12 is formed in one piece instead of two, as shown in Fig. 2. Fig. 6 is substantially similar'to Fig. 2 except that the strip or packing is flexed in the opposite way so as to bring the face 19 at the outside; in other respects the body 15 is provided with the -elastic or resilient parts 16 and 17 and covering as Iat 18.

Referring to Fig. 7, 21-21 represents a metallic body which is made in more than one part, the elastic part`22 being constructed as desired. The parts are retained assembled by means of covering 23 of suitable-material. Figs. 8, 9, 10 and 11 illusv trate other modiiied forms. In Fig. 8, 24 represents the metallic body, 25 the elastic backing, 26 the covering. In Fig. 9, 27 represents the metallic body having an apex 28, 29 the backing, and 30 the covering or retainer. In Fig. 10, 81 represents the body, 32 the elasticbacking which is extended as at 88, the same being enclosed as in 84. In Fig. 11, 86 represents the metallic body, 35 the elastic backing, and 87 the' cover,v A

In using the packing, `which may be produced in various lengths, the same is or- Y tioned that the ends may be cut loit straight so that they abut, or cut at 'an angle or .in any equivalent manner so thatthey overlap. In Fig. 13 I have shown how the packing may be ormed in a complete ring 4t() ywithf out a break, butin this case it is necessary to make the same tto certain sizes, and when so constructed, it necessitates keeping a supply of various sizes on hand. By making the packing in strips of the desired lengths and size, parts may bereut voff and rings can be made 4ot any-desired size and shape, depending upon the .particular api,- plication intended. l

In using the packing, lthe lsame is applied in the stu'lhng box or the equivalent, and in the case of a ,moving part toI be packed, the metallic body is `brought into contact with the moving part. The` packf ing used should substantially tit the box, .but the same may be tightened up from time to time .to takeV up for wear in the usual manner by adjusting the gland or the equivalent. The packing isy substantially durable, however, and frequent take-rups in the stuffing box owing to wearr are generally not necessary. The elasticy yielding l,or

Vresilient backing 4 4 or other. types asv the case may be, tendsto always maintain the metallic body part 1 in contact'with the moving parts at all times, affording a tight, leak-proof joint.` .The packing being sub stantially -lijexible, pliable and resilient, contacts at` all points, consequently, for example, it there isa flat spot on a rod to be packed, a tight ointrmay be had immediately upon packing. This is not thecase vwhere the packing is ynot pliableY or flexible, asin the case of a rigid or non-iiexible'inet'al face rthe leak will continue unt-il the packing hasV worn down to make a fit. While generally 1t is preferred to make'the'meeting 4faces of the metallicandl elastic bodiesvor partsl substantially ofy the contour design shown in Fig. 2, I do not wish to be understood as interring that the design canvnot be modied for Yvarious sizes and uses.

rllhe backing itself is, however, a packing,

. and tends to prevent leakage through the box around the body l. One or more rings or packing elements may be employed, depending upon the needs, and the same in this instance seal against leakage between each other.

It will be particularly noted with the packing herein described, Where the same is made as set forth, that the same is extremely pliable as Well as flexible, so that it may be fitted and forced into a tight llt to provide a tight joint. It readily conforms to the part to be packed, as for example, it is substantially immaterial if used for packing around a reciprocating rod whether the rod be cylindrical, hexagonal or irregular in cross sectional shape, as the packing` Will conform thereto. YOvving to its pliability, it is readily forced into a tight llt by the elastic backing, and always'maintained in position.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same Without departing from the spirit of my invention; hence I do not Wish to be understood as .limiting myself to the exact form, arrangefacing consisting of a flexible non-elastic element, the same being surrounded by a braiding of copper Wire, whereby a ilexible yielding surface is presented to the moving element.

2. A packing consisting of a metallic body' part provided With a Wear face at one side, the opposite side being beveled from a point intermediate the edges to the edges adjacent the Wear face side, a strip of rubber arranged on each beveled face, with the inner edges of the strips substantially meeting, said strips of a size to provide a back face substantially parallel and equal in Width to the Wear face, and means for enveloping and securing parts together in assembled relation.

In testimony whereof, I have hereunto signed my name.

- i JOHN M. RHODES. 

